browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))

// preload images:
if ( browser) 	{

	flag_uk = new Image;
	flag_uk.src = "media/flag_uk_u.gif";
	flag_uk_a = new Image;
	flag_uk_a.src = "media/flag_uk_a.gif";
	
	flag_nl = new Image;
	flag_nl.src = "media/flag_nl_u.gif";
	flag_nl_a = new Image;
	flag_nl_a.src = "media/flag_nl_a.gif";
	
}

function swap(iname, gname) {
	iname.src = gname.src;
}